How to use the bespoken-tools/lib/core/global.Global.config function in bespoken-tools

this.serverless.cli.log("cli options", this.options);

    // do nothing if inject-passthru not passed on command line
    if (!this.injectPassThruOption) {
      return;
    }

    this.serverless.cli.log(
      "Replacing lambda handlers with bespoken passthru functions"
    );

    const bespokenProxyUrl = URLMangler.manglePipeToPath(
      Global.config().sourceID()
    );

    const bespokenProxySecret = Global.config().secretKey();

    // inject environment variables with necessary bespoken connection parameters into lambda environment
    this.mutateLambdaEnvironmentVariables({
      bespoken_proxy_url: bespokenProxyUrl,
      bespoken_proxy_secret: bespokenProxySecret
    });

    this.serverless.cli.log(
      `Pass through handlers will proxy requests to: ${bespokenProxyUrl}`
    );

    const handlers = this.handlers;

    // save directory where serverless expects to look for source files
    this.originalServicePath = this.originalServicePath
      ? this.originalServicePath

Global.config().sourceID(),
            Global.config().secretKey()
          )
        );
      } else {
        this.serverless.cli.log(
          "Bespoken proxy started in publically accessible mode"
        );
        this.serverless.cli.log(process.cwd());
        this.serverless.cli.log(
          "The public URL for accessing your local service"
        );
        this.serverless.cli.log("");

        this.serverless.cli.log(
          URLMangler.manglePipeToPath(Global.config().sourceID())
        );
      }
      this.serverless.cli.log("");
      this.serverless.cli.log(
        "The URL for viewing transaction history of requests/responses sent through the proxy service"
      );
      this.serverless.cli.log("");
      this.serverless.cli.log(
        URLMangler.mangleNoPath(
          Global.config().sourceID(),
          Global.config().secretKey()
        )
      );
    });
  };